The results of improvedtechnology
can be more useful to some people than to others.
For example, developing genetic changes to crops
to make them grow in hot dry conditions might be more useful
to people living nearer the equator than the poles.
Improved technology can be expensive
and some people
might notbenefit because they do not have enough
money.
For example, radiotherapy
used to
treat cancer
may only be available
in richer countries.

Scientific
knowledgehas limitations.

There are some questions which can
not be answered
because the evidence is incomplete or inconclusive.
This type of question can be answered by
science in the
future after doing further research.

There are some questions which can never
be answered
by science. Science can tell us how to do
things but notwhether it is good or right to do
things. People look tophilosophy, politics or
religion to answer these
questions.